Spotify

You can search for all your music in Spotify just like you would in any other desktop app. The fact that Spotify is online means virtually nothing, and you can still have music generated by genre or other criteria that you clearly set and select. It's a free program that's designed for both Windows and MAC OS X, as well as all mobile operating systems - Windows Phone, iOS and Android. So it is a very massive app thanks to which you can conveniently play your favorite music. Spotify has two versions. The first version is free, but unfortunately it only contains selected music albums and also contains the ubiquitous advertising. The paid version, which costs quite a few euros per month, contains a complete database of music and is completely ad-free, which attracts most people and they have no problem paying for the paid version for one month or even for a whole year at a more affordable price.